(2013江苏徐州摸底)我国“北斗”卫星导航定位系统将由5颗静止轨

2013江苏徐州摸底)我国“北斗”卫星导航定位系统将由5颗静止轨道卫星(同步卫星)30颗非静止轨道卫星组成,30颗非静止轨道卫星中有27颗是中轨道卫星,中轨道卫星轨道高度约为2.15×104km ,静止轨道卫星的高度约为3.60×104km。下列说法正确的是

A.中轨道卫星的线速度大于7.9km/s

B.静止轨道卫星的线速度大于中轨道卫星的线速度

C.静止轨道卫星的运行周期大于中轨道卫星的运行周期

D.静止轨道卫星的向心加速度大于中轨道卫星的向心加速度

答案

答案:C解析:中轨道卫星的线速度小于7.9km/s,静止轨道卫星的线速度小于中轨道卫星的线速度,选项AB错误;静止轨道卫星的运行周期大于中轨道卫星的运行周期,静止轨道卫星的向心加速度小于中轨道卫星的向心加速度,选项C正确D错误。

 

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